Add new measure variables to css
Our new measures defined in https://gitlab.com/gitlab-org/design.gitlab.com can be added to the application css for use when building out new features.
$gl-spacing-1: 2px;
$gl-spacing-2: 4px;
$gl-spacing-3: 8px;
$gl-spacing-4: 12px;
$gl-spacing-5: 16px;
$gl-spacing-6: 24px;
$gl-spacing-7: 32px;
$gl-spacing-8: 48px;
$gl-spacing-9: 64px;
$gl-spacing-10: 96px;